A not-so-hidden secret in information management is the out-of-control growth of unstructured data in corporate life. Millions of data files are stashed in loosely tracked and managed sources such as email, social media sites, and SharePoint, and the contents of these massive repositories are often poorly managed and understood. Unstructured data accounts for 90 percent of the digital universe, according to IDC, which estimates that these files are growing at a rate of 50 percent per year.